The Fast & Furious star took to Instagram Saturday evening where he shared a short video clip that honors Walker's dedication to marine life.
"[I] Was moved to shoot this very special intro to one of Paul Walker's final missions for shark and marine conservation," Johnson wrote on Instagram. " #DiscoveryChannel #SharkWeek #ProtectingThatWhichILove #MissYouBrotherPaul."
In the video shot for Discovery's Shark Week, which kicks off Sunday night, The Rock looks back at the actor's life both on and off screen.
"Paul Walker was not only an incredible actor, dear friend, loving and devoted father..." he explains, "but he was also a champion for shark and marine life conservation whose efforts inspired so many."
Walker had been involved with sharks and Shark Week in the years prior to his death.
In fact, long before he made it big in Hollywood, Walker studied marine biology in college. He would later use his celebrity for good by participating in The BillFish Foundation.
Walker's life was cut short when he passed away in a car crash on Nov. 30, 2013. He is expected to appear in the upcoming Fast & Furious 7 movie.